Commit Graph

6 Commits

Author SHA1 Message Date
ken
c02e62efd7 Update the mps(4) man page for the changes in the new LSI-supported driver.
This should have been included in change 230592.

The supported hardware section still needs some updating to reflect
the current reality.

MFC after:	3 days
2012-02-07 23:43:29 +00:00
brueffer
e4b966f3b7 Reword a sentence in the HARDWARE section a little to make it more suitable
for automatic hardware notes generation.

MFC after:	3 days
2011-11-11 12:06:09 +00:00
uqs
75c697f88d mdoc: reorder sections consistently 2011-06-02 09:56:53 +00:00
ken
aa3acd013b Turn on serialization of task management commands going down to the
controller, but make it optional.

After a problem report from Andrew Boyer, it looks like the LSI
chip may have issues (the watchdog timer fired) if too many aborts
are sent down to the chip at the same time.  We know that task
management commands are serialized, and although the manual doesn't
say it, it may be a good idea to just send one at a time.

But, since I'm not certain that this is necessary, add a tunable
and sysctl variable (hw.mps.%d.allow_multiple_tm_cmds) to control
the driver's behavior.

mps.c:		Add support for the sysctl and tunable, and add a
		comment about the possible return values to
		mps_map_command().

mps_sas.c:	Run all task management commands through two new
		routines, mpssas_issue_tm_request() and
		mpssas_complete_tm_request().

		This allows us to optionally serialize task
		management commands.  Also, change things so that
		the response to a task management command always
		comes back through the callback.  (Before it could
		come via the callback or the return value.)

mpsvar.h:	Add softc variables for the list of active task
		management commands, the number of active commands,
		and whether we should allow multiple active task
		management commands.  Add an active command flag.

mps.4:		Describe the new sysctl/loader tunable variable.

Sponsored by:	Spectra Logic Corporation
2010-10-07 21:56:10 +00:00
ken
4643dcbb25 MFp4 (//depot/projects/mps/...)
Fix a typo.

Submitted by:	pluknet at gmail dot com
2010-09-15 16:05:51 +00:00
ken
21e40815c9 MFp4 (//depot/projects/mps/...)
Add a man page for the mps(4) driver, and reference it in the
mpt(4) driver man page.

Sponsored by:	Spectra Logic Corporation
2010-09-14 21:40:29 +00:00